123422405 has 16 divisors (see below), whose sum is σ = 153705600. Its totient is φ = 95027520.

The previous prime is 123422401. The next prime is 123422407. The reversal of 123422405 is 504224321.

It is a happy number.

It is not a de Polignac number, because 123422405 - 2² = 123422401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123422401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50870 + ... + 53240.

It is an arithmetic number, because the mean of its divisors is an integer number (9606600).

Almost surely, 2^123422405 is an apocalyptic number.

It is an amenable number.

123422405 is a deficient number, since it is larger than the sum of its proper divisors (30283195).

123422405 is a wasteful number, since it uses less digits than its factorization.

123422405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 123422405 is about 11109.5636728001. The cubic root of 123422405 is about 497.8876283395.

Adding to 123422405 its reverse (504224321), we get a palindrome (627646726).

The spelling of 123422405 in words is "one hundred twenty-three million, four hundred twenty-two thousand, four hundred five".